NORTH AMERICAN COLEOPTERA. 107 



one (measured at the sides). Legs strong, but not much inflated. Palpus: short, 

 joint 3 transverse half as tliick as the fourth, which is one-half longer than 

 wide and regular. 



Pennsylvania (Franklin County) kindly presented to me by Henry 

 Ulke. 



T. gracile n. sp. — Unicolorous rich chestnut-lnown, inipunctate, pubescence 

 sparse. Length 1.05 mm. 



Head little narrower than the prothorax, antenna- for the length of the last 

 joint longer than the head, frontal ridge slightly arcuate, foveie small, anterior 

 to eye-line, nearer together, so that the connecting sulcus form a half circle, 

 occiput not impressed and not very convex. Prothorax as wide as long, sulcus 

 nearly straight, not deeper in the middle, fovea; small. Elytra across the shoul- 

 ders as wide as the prothorax, sides slightly arcuate, divergent, basal fovea large, 

 short. AbdominaJ segments apparently equal in length, no basal dorsal carina 

 visible. Legs with the anterior and medial thighs inflated. Palpus: Third joint 

 as thick as the club of second somewhat triangular, fourth twice as wide as 

 third and twice as long as wide, somewhat securiform. 



Cedar Rapids, la. 



T. laticolle n. sp. — Yellowish red, impunctate, pubescence minute, nearly 

 sericeous on the elytra; legs and auteutiiB yellow. Length 0.85 mm. 



Head as wide as the prothorax, or perhaps very little narrower, frontal margin 

 straight, fovea; in a line through the middle of the eyes, sulcus entire, in some 

 pieces more or less angulate near the supra-antennal swelling, occiput deeply 

 impressed and sulcate to near the middle of the vertex. Prothorax wider than 

 long, the part anterior to the sulcus nearly twice as wide as long, the part poste- 

 rior to the sulcus one-third the length of the anterior part, the sulcus slightly 

 angulate, and the lateral fovese small. Elytral sides divergent, widest in the 

 posterior third, discal impression large and short. Abdomen as wide as the ely- 

 tra, the segments nearly equal. Palpus: Third joint depressed globular, smaller 

 than the club of the second, last joint regular, rather pointed, slender, the sur- 

 face punctured or squamose. 



Cedar Kapids, la., sometimes in company with T. parvuhtm or 

 thoracicum ; the latter has, besides the known characters, on the de- 

 clive sides of the elytra an impressed line divergent from the middle 

 of the marginal line backwards to the exterior angle of the elytron. 



T. majus n. sp.— Yellowish brown, polished, pubescence short, sparee. im- 

 punctate. Length 1.1 mm. 



Head from the frontal margin to the base rather longer than in T. parvnlum. 

 otherwise exactly like it. Prothorax as wide as bmg, if not a little wider : sulcus 

 as distHut from the base as one-sixth of the pronotal length, deeply angulated in 

 the middle, the lateral fovea, or rather the triangular depression rather large, 

 owing to the smaller width of the basal transverse elevation between the sulcus 

 and the base. Elytra as in T. parvnlum, but the discal basal impression is larger 

 and very much longer, extending to nearly half the elytral length and the su- 

 tural line is punctured on its outside. Abdomen at the base not narrower, the 

 dorsals and ventrals equal, except the second ventral, which is longer; at the 



TRANS. AM. ENT. SOC. XIX. JUNE, 1892. 



